This number is a prime.

Just showing those entries submitted by 'Harrison': (Click here to show all)

+ One less than the product of the digits in the digit sequence specifying M48 (2^57885161-1), i.e., 2*5*7*8*8*5*1*6*1*1 - 1, is an emirp. M48 is the largest known Mersenne prime to exhibit this property. [Harrison]

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